An image which appears to announce Crysis 4 has appeared online, posted by Crytek China.
The image is still visible at the time of writing on Chinese social media site BiliBili.
"The 'Crysis 4' project is confirmed, opening a new nano battlefield!" translated text reads. "Follow @Crytek_Official, we will continue to update you with the latest news."
More recently, remastered versions of the original Crysis and its two sequels have released over the past two years - prompting speculation an all-new entry was up next.
Eurogamer has contacted Crytek for comment.